Fix mysql insecure hostname verfiy didn't work

[git-hulk]

What changed?

Fix MySQL insecure hostname verify didn't work

Why?
The MySQL plugin skip this configuration

How did you test it?
Check whether can skip the server name verify or not

Potential risks
No

Release notes
No

Documentation Changes
No

[coveralls]

Pull Request Test Coverage Report for Build 1ea45965-1095-4c93-aee1-05cf5fac9f3b

• 0 of 2 (0.0%) changed or added relevant lines in 1 file are covered.
• 10 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.001%) to 56.814%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
common/persistence/sql/sqlplugin/mysql/plugin.go	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
common/membership/rpServiceResolver.go	2	73.58%
common/task/fifoTaskScheduler.go	2	87.63%
common/task/weightedRoundRobinTaskScheduler.go	2	88.6%
service/history/queue/timer_queue_processor_base.go	4	78.83%

Totals
Change from base Build 5f69fa03-622b-40d8-a9eb-f129cb92dbef:	0.001%
Covered Lines:	81257
Relevant Lines:	143022

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💛 - Coveralls